P0428
Catalyst Temperature Sensor High Input Bank 1 Sensor 1
Generic code
Auxiliary Emissions Control
Medium severity
Moderate repair
Free on OBD DashX
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What P0428 means
- The fault code P0428 indicates that there is a problem with the circuit that controls the temperature sensor for the catalytic converter on bank 1. This may cause issues with emissions and engine performance.
Possible symptoms
- Illuminated check engine light
- Failed emissions test
- Decreased engine performance
- Rough idle or stalling
Possible causes
- Malfunctioning catalytic converter
- Damaged wiring or connections in the circuit
- Corroded or loose electrical connections
- Failed temperature sensor
- Failed engine control module (ECM)
Related parts
- Catalytic Converter: A catalytic converter is a device that converts toxic gases and pollutants to less harmful pollutants. Problems lead to harmful emissions out of limit, rotten egg smell from exhaust & reduced speed
Possible solutions
- Replace the catalytic converter
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the temperature sensor
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0428 on OBD DashX
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